Built-in drive shaft flow regulating valve

Abstract

The utility model discloses a kind of built-in drive axial flow type regulating valve, it includes valve body: the valve body is from left to right by shell one, flow guide cavity and shell two composition, the inner wall of the flow guide cavity is equipped with flow guide hole, driving mechanism is installed in the valve body. Compared with prior art, by the setting of driving mechanism, the valve body is simple in structure, adopts built-in driving mechanism, the opening and closing of valve body are realized by built-in driving mechanism, it is not necessary to be connected with valve stem or other devices and external driving device, and by using different control elements and conveying pipe two are connected, the valve body can be used for regulating valve and cut-off valve, to achieve the purpose of adjusting flow or fast closing, simultaneously in emergency, the valve body is automatically closed by the mode of medium control, without the control of external control element, to realize automatic closing, play the role of automatic closing safety protection, to effectively increase the application range of valve body, improve the practicality and convenience of valve body.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a built-in drive axial flow regulating valve. Background Technology

[0002] Axial flow control valves mainly consist of a valve body, valve core, and valve stem. The valve body is an integral structure with flanges at both ends. The valve stem is located within the valve body cavity and is driven by a control mechanism. It has no packing seal, resulting in fewer leakage points, and is widely used in long-distance oil and gas pipelines. Currently, the typical structure of axial flow control valves used in the oil and gas industry both domestically and internationally is represented by products from the Dutch company MOKVELD. Its valve core is controlled by a 90° angle transmission mechanism. This mechanism consists of a pair of meshing racks, mounted on the valve core stem and valve stem respectively. The up-and-down movement of the valve stem drives the left-and-right movement of the valve core stem, allowing the valve core to move and adjust within the sleeve.

[0003] Its disadvantages are: the two racks of the angle transmission mechanism have matching errors, the racks and their guide holes are prone to wear during transmission, resulting in transmission errors, low adjustment accuracy, short service life, and the need for valve stems or other devices to connect with external drive mechanisms. This makes the overall structure of the control valve less compact, occupies more space, and increases the difficulty and cost of installation and maintenance. Therefore, it is necessary to design a built-in drive axial flow control valve to solve the above problems. Utility Model Content

[0004] In order to overcome the problems of misfitting the two racks in the existing angular transmission mechanism, the racks and their guide holes are prone to wear during transmission, resulting in transmission errors, low adjustment accuracy, and short service life. In addition, the valve stem or other devices are required to connect to the external drive mechanism, which makes the overall structure of the control valve less compact, occupies more space, and increases the difficulty and cost of installation and maintenance. One of the purposes of this utility model is to provide a built-in drive axial flow control valve.

[0005] One of the objectives of this utility model is achieved through the following technical solution: A built-in driven axial flow regulating valve includes a valve body: the valve body is composed of a housing one, a flow guiding cavity, and a housing two from left to right; the inner wall of the flow guiding cavity has a flow guiding hole; a driving mechanism is installed inside the valve body; the driving mechanism includes a control element installed on the flow guiding cavity, a connector installed on one side of the flow guiding cavity, a cylinder body installed on one side of the connector, a piston movably connected to the inner wall of the cylinder body, a piston rod installed on one side of the piston, a guide sleeve bolted to one side of the flow guiding cavity, a sealing element movably connected to one side of the flow guiding cavity, and a mounting... A spring is located between the inner wall of the seal and the inner wall of the guide cavity. A triangular sealing ring is installed on the side of the housing two near the seal. A first delivery pipe is installed on one side of the cylinder body. A second delivery pipe is inserted into the inner wall of the first delivery pipe and is installed with the control element. A through hole is longitudinally symmetrically opened on one side of the seal. A channel is opened on one side of the connector. One end of the channel extends into the cylinder body. One end of the housing two is an inlet. The area between one end of the guide cavity and one end of the housing two is a guide port. The seal is used to close the guide port. One end of the housing one is an outlet.

[0006] According to the aforementioned built-in drive axial flow regulating valve, a sealing surface is provided on one end face of the sealing element, and the sealing surface and the end face of the triangular sealing ring form a soft and hard sealing structure.

[0007] According to the built-in drive axial flow regulating valve, the housing 1, the housing 2, and the flow guiding cavity are all integrally formed structures. The flow guiding cavity is provided with a receiving part 1, a receiving part 2, and a receiving part 3. The connecting member, the cylinder body, and the sealing member are respectively disposed in the receiving part 1, the receiving part 2, and the receiving part 3. The area between the receiving part 3 and the sealing member is a medium cavity. The other end of the channel extends into the interior of the medium cavity.

[0008] According to the built-in drive axial flow regulating valve, the connector is installed on the inner wall of the housing by bolts, a slot is provided on one side of the connector, and a plug is fixed on the side of the cylinder body near the slot. The cylinder body is detachably connected to the flow guide cavity through the connector, the slot and the plug.

[0009] According to the aforementioned built-in drive axial flow regulating valve, the inner diameter of the guide sleeve is adapted to the outer diameter of the piston rod, the piston rod passes through the seal and is movably connected to the seal, and a nut is threaded onto one side of the outer wall of the piston rod.

[0010] According to the aforementioned built-in drive axial flow regulating valve, the connecting member is conical.

[0011] According to the aforementioned built-in drive axial flow regulating valve, the housing one, the flow guiding cavity, and the housing two are connected by bolts to form a detachable assembly structure.

[0012] According to the aforementioned built-in drive axial flow regulating valve, the first housing, the flow guiding cavity, and the second housing are all made of forged steel.

[0013] According to the aforementioned built-in drive axial flow regulating valve, it further includes a PLC controller and an oil pump, wherein the control element is connected to the PLC controller and the oil pump.

[0014] The above-mentioned solution has the following beneficial effects:

[0015] 1. Compared with existing technologies, this valve body has a simple structure due to its built-in drive mechanism. The built-in drive mechanism enables the valve body to open and close without requiring a valve stem or other external drive device. Furthermore, by using different control elements connected to the delivery pipe, this valve body can be used as a regulating valve and a shut-off valve to regulate flow or achieve rapid closure. In emergency situations, this valve body can automatically close via media control without the need for external control elements, providing automatic closure safety protection. This effectively increases the valve body's applicability and enhances its practicality and convenience.

[0016] 2. Through the configuration of the drive mechanism, receiving part one, receiving part two, receiving part three, and connecting parts, this valve body is equipped with a separable drive mechanism. This design allows the valve body to be connected first during installation, and then the drive mechanism can be assembled independently and precisely. This effectively avoids the space limitations and operational interference problems encountered during the installation of traditional integrated valve body structures. Moreover, the drive mechanism can be limited and installed in the flow guide cavity without requiring too many fixing parts. The connecting parts and guide sleeves limit the two ends of the cylinder body, effectively improving the overall installation and maintenance efficiency of the valve body.

[0017] 3. By setting up the sealing element, sealing surface, and triangular sealing ring, compared with the existing method of sealing the flow port by having the sealing surface mostly in a circular shape abutting against the circular sealing ring, this valve body, through the driving mechanism, can make the sealing surface with a certain angle set on the sealing element abut against one side of the inclined surface of the triangular sealing ring. Compared with the existing technology that uses this soft and hard sealing method, the sealing effect is better, effectively improving the sealing performance of the valve body.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0020] Figure 1 This is a schematic diagram of the overall structure of a built-in drive axial flow regulating valve according to this utility model;

[0021] Figure 2 This is a schematic diagram of the valve body of a built-in drive axial flow regulating valve in the open state according to this utility model.

[0022] Figure 3 This is a schematic diagram of the valve body of a built-in drive axial flow regulating valve in the closed state according to the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of the receiving part 2 of the built-in drive axial flow regulating valve of this utility model;

[0024] Figure 5 This is a schematic diagram of the flow guide cavity of a built-in drive axial flow regulating valve according to the present invention;

[0025] Figure 6 This is a schematic diagram of the delivery pipe 2 of the present invention, which is a built-in drive axial flow regulating valve.

[0026] Legend:

[0027] 1. Valve body; 101. Housing 1; 102. Flow guide cavity; 103. Housing 2; 2. Drive mechanism; 21. Control element; 22. Connecting part; 23. Cylinder body; 24. Piston; 25. Piston rod; 26. Guide sleeve; 27. Seal; 28. Spring; 3. Triangular sealing ring; 4. Delivery pipe 1; 5. Delivery pipe 2; 6. Inlet; 7. Flow guide port; 8. Outlet; 9. Sealing surface; 10. Receiving part 1; 11. Receiving part 2; 12. Receiving part 3; 13. Slot; 14. Insert block; 15. Nut; 16. Flow guide hole; 17. Through hole; 18. Channel; 19. Medium chamber. Detailed Implementation

[0028] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Example 1, referring to Figures 1-6 A built-in driven axial flow regulating valve includes a valve body 1: the valve body 1 is composed of a housing 101, a flow guiding cavity 102 and a housing 2 103 from left to right. The inner wall of the flow guiding cavity 102 is provided with a flow guiding hole 16, and a driving mechanism 2 is installed inside the valve body 1.

[0032] The drive mechanism 2 includes a control element 21 mounted on the flow guide cavity 102, a connector 22 mounted on one side of the flow guide cavity 102, a cylinder body 23 mounted on one side of the connector 22, a piston 24 movably connected to the inner wall of the cylinder body 23, a piston rod 25 mounted on one side of the piston 24, a guide sleeve 26 bolted to one side of the flow guide cavity 102, a seal 27 movably connected to one side of the flow guide cavity 102, and a spring 28 mounted between the inner wall of the seal 27 and the inner wall of the flow guide cavity 102. A triangular sealing ring 3 is installed on the side of the housing 2 103 near the seal 27. A first delivery pipe 4 is installed on one side of the cylinder body 23. A second delivery pipe 5 is inserted into the inner wall of the first delivery pipe 4. The second delivery pipe 5 is installed with the control element 21.

[0033] The seal 27 has a through hole 17 symmetrically opened on one side in the longitudinal direction, and the connector 22 has a channel 18 opened on one side, with one end of the channel 18 penetrating into the inside of the cylinder body 23.

[0034] One end of housing 103 is inlet 6, the area between one end of flow guide cavity 102 and one end of housing 103 is flow guide port 7, the seal 27 is used to close flow guide port 7, and one end of housing 101 is outlet 8.

[0035] It also includes a PLC controller and an oil pump, with control element 21 connected to the PLC controller and the oil pump.

[0036] Specifically, the PLC controller is used to control the control element 21 on the overall control valve body 1. The oil pump and control element 21 work together to introduce hydraulic oil from the oil tank into the cylinder body 23. The control element 21 can be a combination of a throttle regulating valve and a directional valve. The directional valve integrates a throttle regulating valve. The directional valve, oil pump, and PLC controller are connected. The directional valve is a three-way valve. One end of the directional valve is connected to the delivery pipe 2 5, the other end is connected to the oil pump, and the directional valve is connected to the oil tank. The amount of oil in the cylinder body 23 is adjusted by the throttle regulating valve, and the amount of oil delivered is controlled by adjusting the amount of oil delivered. The size of the opening between the seal 27 and the guide port 7 determines the hydraulic oil supplied to the cylinder body 23 via the oil pump, oil tank, throttle control valve, reversing valve, and delivery pipe 25. Delivery pipe 25 then transfers the hydraulic oil inside to delivery pipe 14, which in turn supplies hydraulic oil into the cylinder body 23. As hydraulic oil is continuously supplied to the cylinder body 23, it pushes the piston 24 towards the side closer to the connector 22. This movement of piston 24 causes piston rod 25 to move, which in turn drives the seal 27 to move. The seal 27 then separates from the triangular sealing ring 3, thereby opening the guide port 7. When the valve is opened, the seal 27 moves with the piston rod 25 while squeezing the spring 28. This allows the oil pump and control element 21 to control the opening degree of the guide port 7. After the guide port 7 opens, the fluid medium enters from the inlet 6 at one end of the housing 2 103, is transported to the guide cavity 102 through the guide hole 16 on the side of the guide cavity 102 near the housing 2 103, and finally exits through the guide hole 16 on the side of the guide cavity 102 near the housing 1 101. The fluid medium is ultimately output from the outlet 8 according to the opening degree of the guide port 7. When the control element 21 is a throttling valve or a reversing valve, this valve body 1... It can regulate the output flow rate of the fluid medium. When it is necessary to close the valve body 1, the passage connected to the oil pump is closed by switching the valve, so that the cylinder body 23 is connected to the oil tank. With the reset action of the spring 28, the spring 28 rebounds and pushes the seal 27 to one side of the triangular seal ring 3. The movement of the seal 27 drives the piston rod 25 to move, so that the piston 24 squeezes the hydraulic oil inside the cylinder body 23 back into the oil tank through the first delivery pipe 4, the second delivery pipe 5 and the switching valve. Thus, the seal 27 seals with the triangular seal ring 3, blocking the fluid medium from being output from the guide port 7 and the outlet 8.

[0037] When the fluid medium flows into the guide cavity 102 through the inlet 6 and guide hole 16 on one side of the housing 103, the fluid medium at the inlet 6 flows into the medium cavity 19 through the through hole 17. The fluid in the medium cavity 19 flows into the channel 18. At this time, the fluid medium in the medium cavity 19 acts as a lubricant for the spring 28. When the external fluid medium pressure changes or the external control element 21 malfunctions, the fluid medium in the medium cavity 19 automatically fills the cylinder body 23 through the channel 18. The fluid medium in the medium cavity 19 flows into the cylinder body 23 through one end of the channel 18 and pushes the piston 24 in the cylinder body 23 to move towards the inlet 6. With the help of the spring 28, the sealing element 27 can quickly fit with the triangular sealing ring 3, thereby closing the guide port 7 and blocking the fluid medium from being output from the guide port 7 and the outlet 8. Thus, in some emergency situations, this medium control method can achieve automatic closure of the valve body 1 without the need for external control element 21, playing a role in automatic closure safety protection.

[0038] In this embodiment, a sealing surface 9 is provided on one end face of the sealing element 27. The sealing surface 9 and the end face of the triangular sealing ring 3 form a soft and hard sealing structure, that is, a double sealing structure. Compared with the traditional circular sealing ring sealing method, the inclined sealing method has a better sealing effect.

[0039] Specifically, the sealing surface 9 has a certain slope, and the sealing surface 9 and the side wall of the triangular sealing ring 3 are in contact to achieve the purpose of sealing and closing the guide port 7.

[0040] In this embodiment, the housing 101, housing 2 103 and flow guide cavity 102 are all integrally formed structures. The flow guide cavity 102 is provided with a receiving part 10, a receiving part 2 11 and a receiving part 3 12. The connecting member 22, the cylinder body 23 and the sealing member 27 are respectively disposed in the receiving part 10, the receiving part 2 11 and the receiving part 3 12. The area between the receiving part 3 12 and the sealing member 27 is the medium cavity 19. The other end of the channel 18 extends into the inside of the medium cavity 19.

[0041] In this embodiment, the connector 22 is bolted to the inner wall of the housing 101. A slot 13 is provided on one side of the connector 22. A plug 14 is fixed on the side of the cylinder body 23 near the slot 13. The cylinder body 23 is detachably connected to the flow guide cavity 102 through the connector 22, the slot 13 and the plug 14.

[0042] In this embodiment, the inner diameter of the guide sleeve 26 is matched with the outer diameter of the piston rod 24. The piston rod 24 passes through the seal 27 and is movably connected to the seal 27. A nut 15 is threaded onto one side of the outer wall of the piston rod 24.

[0043] In this embodiment, the connector 22 is tapered.

[0044] Specifically, when assembling the drive mechanism 2 inside the flow guide cavity 102, first place the cylinder body 23 from the side of the flow guide cavity 102 near the housing 101 into the receiving part 2 11. Then place the connector 22 into the receiving part 101, so that the insert block 14 on one side of the cylinder body 23 is inserted into the slot 13. Install the connector 22 onto the flow guide cavity 102 with bolts. Then, install the guide sleeve 26 from the side of the flow guide cavity 102 near the housing 101 into the flow guide cavity 102 with bolts. Install one end of the spring 28 onto the inner wall of one side of the receiving part 3 12. Then, place the seal 27 into the receiving part 3 12 so that one end abuts against the other end of the spring 28. Finally, screw the nut 15 onto the outer wall of the piston rod 25. Thus, the cylinder body 23 is supported by the receiving part 2 11, and its left and right sides are limited by the connector 22 and the guide sleeve 26, so that the cylinder body 23 is stably installed in the flow guide cavity 102. The working process is as follows: when hydraulic oil is introduced into the cylinder body 23, the hydraulic oil pushes the piston 24 to move towards the side of the connecting member 22. Since the piston rod 25 is mounted on the piston 24, the piston rod 25 moves synchronously with the piston 24 as the piston 24 moves. The position of the nut 15 restricts the movement direction of the seal 27. Thus, as the piston rod 25 moves towards the connecting member 22, the nut 15 pushes the seal 27 to move synchronously with the piston rod 25. The movement of the seal 27 compresses the spring 28, thereby opening the guide port 7. When the cylinder body 23 is depressurized, under the rebound action of the spring 28, the spring 28 pushes the seal 27 to move towards the side of the outlet 8. The movement of the seal 27 drives the piston rod 25 and the piston 24 to move synchronously with it through the nut 15, thereby closing the guide port 7. The use of a separate drive mechanism 2 allows for quick disassembly and maintenance when the drive mechanism 2 malfunctions, effectively improving maintenance efficiency and facilitating assembly.

[0045] In this embodiment, the housing 101, the flow guiding cavity 102, and the housing 2 103 are connected by bolts to form a detachable assembly structure;

[0046] In this embodiment, the first shell 101, the guide cavity 102, and the second shell 103 are all made of forged steel;

[0047] Specifically, the shell 101, the flow guide cavity 102, and the shell 2 103 are three-piece detachable assembly structures, which facilitate on-site assembly and maintenance, and the use of forged steel material effectively improves its stability.

[0048] Example 2, refer to Figures 1-6 A built-in driven axial flow regulating valve includes a valve body 1: the valve body 1 is composed of a housing 101, a flow guiding cavity 102 and a housing 2 103 from left to right. The inner wall of the flow guiding cavity 102 is provided with a flow guiding hole 16, and a driving mechanism 2 is installed inside the valve body 1.

[0049] The drive mechanism 2 includes a control element 21 mounted on the flow guide cavity 102, a connector 22 mounted on one side of the flow guide cavity 102, a cylinder body 23 mounted on one side of the connector 22, a piston 24 movably connected to the inner wall of the cylinder body 23, a piston rod 25 mounted on one side of the piston 24, a guide sleeve 26 bolted to one side of the flow guide cavity 102, a seal 27 movably connected to one side of the flow guide cavity 102, and a spring 28 mounted between the inner wall of the seal 27 and the inner wall of the flow guide cavity 102. A triangular sealing ring 3 is installed on the side of the housing 2 103 near the seal 27. A first delivery pipe 4 is installed on one side of the cylinder body 23. A second delivery pipe 5 is inserted into the inner wall of the first delivery pipe 4. The second delivery pipe 5 is installed with the control element 21.

[0050] One end of housing 101 is the inlet 6, the area between one end of the flow guiding cavity 102 and one end of housing 103 is the flow guiding port 7, the seal 27 is used to close the flow guiding port 7, and the end of housing 103 away from the flow guiding port 7 is the outlet 8.

[0051] It also includes a PLC controller and an oil pump, with control element 21 connected to the PLC controller and the oil pump.

[0052] Specifically, the difference between Embodiment 2 and Embodiment 1 lies in the following: the control element 21 used is different. The PLC controller is used to control the control element 21 on the overall control valve body 1. The oil pump and the control element 21 work together to introduce the hydraulic oil inside the oil tank into the cylinder body 23. The control element 21 can be a combination of a shut-off valve and a reversing valve. The second delivery pipe 5 is connected to a three-way connector. The three ports of the three-way connector are respectively connected to the reversing valve, the shut-off valve, and the second delivery pipe 5. The reversing valve and the shut-off valve are connected to the oil tank. The reversing valve, the oil pump, and the PLC controller are connected. Under normal conditions, hydraulic oil is delivered into the cylinder body 23 through the oil pump, the oil tank, the reversing valve, and the second delivery pipe 5. The second delivery pipe 5 delivers the hydraulic oil inside it to the first delivery pipe 4. The first delivery pipe 4 delivers the hydraulic oil into the cylinder body 23. As hydraulic oil is continuously delivered into the cylinder body 23, the hydraulic oil pushes the piston 24 to move towards the side closer to the connecting member 22. The movement of the piston 24 drives the piston rod 25 to move. The movement of the piston rod 25 drives the sealing member. 27 moves, the seal 27 separates from the triangular seal ring 3, thereby fully opening the guide port 7. After the guide port 7 is fully open, the fluid medium enters from the inlet 6 at one end of the housing 2 103, is transported to the guide cavity 102 through the guide hole 16 on the side of the guide cavity 102 near the housing 2 103, and then exits through the guide hole 16 on the side of the guide cavity 102 near the housing 1 101, and finally exits from the outlet 8. When it is necessary to quickly close the valve body 1, a de-energization signal is given to the shut-off valve. Thus, the second delivery pipe 5 is directly connected to the oil tank through the shut-off valve, providing a passage. The cylinder body 23 is depressurized through this passage, and the pressure inside the cylinder body 23 drops sharply. The compressed spring 28 is released instantly, realizing the self-resetting rebound of the spring 28. The rebound of the spring 28 pushes the seal 27 to move to one side of the triangular sealing ring 3. The movement of the seal 27 drives the piston rod 25 to move, so that the seal 27 seals with the triangular sealing ring 3, blocking the fluid medium from being output from the guide port 7 and the outlet 8.

[0053] When the fluid medium flows into the guide cavity 102 through the inlet 6 and guide hole 16 on one side of the housing 103, the fluid medium at the inlet 6 flows into the medium cavity 19 through the through hole 17. The fluid in the medium cavity 19 flows into the channel 18. At this time, the fluid medium in the medium cavity 19 acts as a lubricant for the spring 28. When the external fluid medium pressure changes or the external control element 21 malfunctions, the fluid medium in the medium cavity 19 automatically fills the cylinder body 23 through the channel 18. The fluid medium in the medium cavity 19 flows into the cylinder body 23 through one end of the channel 18. Within 3, the piston 24 inside the cylinder body 23 is pushed to move towards the inlet 6 side, and with the help of the spring 28, the sealing element 27 can quickly fit with the triangular sealing ring 3, thereby closing the guide port 7 and blocking the fluid medium from being output from the guide port 7 and the outlet 8. Thus, in some emergency situations, this medium control method can be used to achieve automatic closing of the valve body 1 without the need for external control element 21, playing the role of automatic closing safety protection. Therefore, this valve body 1 can be used as a regulating valve and a shut-off valve, effectively improving practicality and convenience, and increasing the application range of the valve body 1.

[0054] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A built-in driven axial flow regulating valve, characterized in that, Includes valve body (1): The valve body (1) consists of a housing one (101), a flow guide cavity (102) and a housing two (103) from left to right. The inner wall of the flow guide cavity (102) is provided with a flow guide hole (16). A drive mechanism (2) is installed inside the valve body (1). The drive mechanism (2) includes a control element (21) mounted on the flow guide cavity (102), a connector (22) mounted on one side of the flow guide cavity (102), a cylinder body (23) mounted on one side of the connector (22), a piston (24) movably connected to the inner wall of the cylinder body (23), a piston rod (25) mounted on one side of the piston (24), a guide sleeve (26) bolted to one side of the flow guide cavity (102), a seal (27) movably connected to one side of the flow guide cavity (102), and a spring (28) mounted between the inner wall of the seal (27) and the inner wall of the flow guide cavity (102). A triangular sealing ring (3) is installed on the side of the housing (103) near the seal (27). A first delivery pipe (4) is installed on one side of the cylinder body (23). A second delivery pipe (5) is inserted into the inner wall of the first delivery pipe (4). The second delivery pipe (5) is installed with the control element (21). The sealing element (27) has a through hole (17) symmetrically opened on one side in the longitudinal direction, and the connecting element (22) has a channel (18) opened on one side, with one end of the channel (18) penetrating into the interior of the cylinder body (23). One end of the second housing (103) is the inlet (6), the area between one end of the flow guide cavity (102) and one end of the second housing (103) is the flow guide port (7), the seal (27) is used to close the flow guide port (7), and one end of the first housing (101) is the outlet (8).

2. The built-in drive axial flow regulating valve according to claim 1, characterized in that, The sealing element (27) has a sealing surface (9) on one end face, and the sealing surface (9) and the end face of the triangular sealing ring (3) form a soft and hard sealing structure.

3. The built-in drive axial flow regulating valve according to claim 1, characterized in that, The first housing (101), the second housing (103), and the flow guide cavity (102) are all integrally formed structures. The flow guide cavity (102) is provided with a first receiving part (10), a second receiving part (11), and a third receiving part (12). The connecting member (22), the cylinder body (23), and the sealing member (27) are respectively disposed in the first receiving part (10), the second receiving part (11), and the third receiving part (12). The area between the third receiving part (12) and the sealing member (27) is a medium cavity (19). The other end of the channel (18) extends into the interior of the medium cavity (19).

4. The built-in drive axial flow regulating valve according to claim 1, characterized in that, The connector (22) is bolted to the inner wall of the housing (101). A slot (13) is provided on one side of the connector (22). A plug (14) is fixed on the side of the cylinder body (23) near the slot (13). The cylinder body (23) is detachably connected to the flow guide cavity (102) through the connector (22), the slot (13) and the plug (14).

5. The built-in drive axial flow regulating valve according to claim 1, characterized in that, The inner diameter of the guide sleeve (26) is adapted to the outer diameter of the piston rod (25). The piston rod (25) passes through the seal (27) and is movably connected to the seal (27). A nut (15) is threaded onto one side of the outer wall of the piston rod (25).

6. The built-in drive axial flow regulating valve according to claim 1, characterized in that, The connector (22) is tapered.

7. The built-in drive axial flow regulating valve according to claim 1, characterized in that, The first housing (101), the flow guiding cavity (102), and the second housing (103) are connected by bolts to form a detachable assembly structure.

8. The built-in drive axial flow regulating valve according to claim 1, characterized in that, The first shell (101), the flow guide cavity (102), and the second shell (103) are all made of forged steel.

9. A built-in drive axial flow regulating valve according to claim 1, characterized in that, It also includes a PLC controller and an oil pump, with the control element (21) connected to the PLC controller and the oil pump.

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